The giant snakehead or giant mudfish (Channa micropeltes) is among the largest species in the family Channidae, capable of growing to 1.3 m (4.3 ft) in length and a weight of 20 kg (44 lb). It is native to the fresh waters of Southeast Asia (south Indian populations are now regarded as a separate species, C. diplogramma), but has also been introduced elsewhere, including the United States where considered invasive. Other names include xaal (শাল মাছ) in Assam, red snakehead, redline snakehead, and ikan toman (where ikan is "fish" in both Indonesian and Malay). The giant snakehead is known in Thai language as pla chado (Thai: ปลาชะโด). The young of the giant snakehead are red in color, with orange and black lateral stripes appearing after about two months. As the giant snakehead matures, it loses its stripes and redness, and instead develops a bluish-black and white pattern on its upper body. Juveniles sold in the aquarium fish trade are commonly called "red snakeheads". They can get up to 1.3 m (4.3 ft) long and a weigh 20 kg (44 lb). Giant snakeheads are the most aggressive[according to whom?] of the about 35 species of snakeheads. The species has the ability to crawl onto land and breathe air, although they are only able to do this in muddy or swampy areas, hence the nickname "mudfish". Its ability to breathe air using a primitive lung located just behind the gills allows it to survive in stagnant water where oxygen levels are low, by coming to the surface and taking a small gulp of air. It also enables the snakehead to travel short distances on land, although it is unable to hunt while on land, as it cannot support itself at all with its small fins in comparison to its large body. In Malaysia and Singapore, they are known locally as the toman, while in Indonesia they are called gabus or haruan (not to be confused with another species of smaller snakehead known as the common snakehead also called haruan), and are cultured in fish ponds and reservoirs as game fish because they put up a strong fight when hooked. The giant snakehead is also a good food fish, and is often served in Chinese restaurants. In Thailand, this fish is prepared in a variety of ways, especially grilled, being a common food item offered by street vendors. In the village/rural parts of Kerala[India], it has the reputation as a good food fish as it eats only live baits. In various Asian cultures, eating this fish is believed to help in healing of the body, for example, after surgery or severe cuts and scrapes. The giant snakehead, normally called red or redline snakeheads, are a popular fish to be sold in the pet trade. They are commonly sold as juveniles as pets. Some are even sold as feeders to be fed to larger carnivorous fish. They are voracious predators that will chase and eat anything that fits in their mouths. Due to this, they are called "freshwater great whites". However, they can successfully be housed with silver arowanas, clown knife fishes, oscars, and other fish from same size group. The giant snakehead is found in Southeast Asia, including the Mekong and Chao Phraya River basins in Cambodia, Laos, Thailand and Vietnam, as well as the Thai-Malay Peninsula and the islands of Borneo and Sumatra. It was formerly believed to have an oddly disjunctive distribution, inhabiting both Southeast Asia and southwest India, about 2,500 km (1,600 mi) apart. The Indian population was speculated to be from an early human introduction, prior to the 19th century.In 2011 it was established that the southeast Asian and Indian population are separate species, with the latter correctly named C. diplogramma (leaving C. micropeltes for the southeast Asian population). Ebanasar (1995)[full citation needed] has also conducted series of experiments on the biology, physiology and culture of this fish. This fish is reported to be highly suitable for cage culture and culture in ponds in combination with tilapia. It is found to be an effective tool in controlling the overpopulation of tilapia and thus checks the stunted growth of tilapia. As the result of human indroductions, the giant snakehead has been reported already in six US states, including Wisconsin, Maryland, and parts of Virginia.